Ready-to-use seed composition and process thereof

US7968079B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Biswanath Sarkar · Faridabad, IN
• Kapil Arya · Barwala, IN
• Gopal Ravichandran · Barwala, IN
• Mohan Prabhu Kuvettu · Barwala, IN
• Shiba Prasad Choudhury · Faridabad, IN
• Venkatachalam Krishnan · Faridabad, IN
• Sanjay Kumar Ray · Barwala, IN
• Jayaraj Christopher · Faridabad, IN
• Satish Makhija · Barwala, IN

Key dates

• Filing date: Jan 8, 2008
• Grant date: Jun 28, 2011
• Expiry date: Nov 2, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B39/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present disclosure provides a ready-to-use seed composition water, a source of silica, a source of alumina, and Na20, wherein the molar ratio of H20:Na20 ranges from 5 to 20, Na20:SiO2 ranges from 0.4 to 5 and SiO2:Al203 ranges from 1.3 to 5 used in the preparation of a synthetic faujasite zeolite which has high thermal stability and higher crystallite size. It further provides a process for preparing the ready-to-use seed composition for preparation of synthetic faujasite zeolite that requires lower crystallization time. The present disclosure provides a seed composition that does not require maturing time and a reaction gel composition that has low water and soda content. The present disclosure further provides a process for the preparation of synthetic faujasite zeolite by blending seed and reaction gel reaction composition to form a seed gel composition and subjecting it to crystallization.